Amount of accumulated amortization of debt issuance costs classified as noncurrent.

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Amount of amortization expense attributable to debt issuance costs.

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Face (par) amount of debt instrument at time of issuance.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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No definition available.

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Weighted average interest rate of debt outstanding.

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Amount, before accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Amount of the cost of borrowed funds accounted for as interest expense for debt.

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The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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No definition available.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt.

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The cash outflow to repay long-term debt that is wholly or partially secured by collateral. Excludes repayments of tax exempt secured debt.

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Loans, overdrafts and long-term debt - Additional Information (Details) - USD ($)	3 Months Ended		9 Months Ended
	Oct. 28, 2017	Oct. 29, 2016	Oct. 28, 2017	Oct. 29, 2016	Sep. 12, 2017	Jan. 28, 2017
Debt Instrument [Line Items]
Amortization of financing costs			$ (3,200,000)	$ (2,200,000)
Bridge Loan
Debt Instrument [Line Items]
Interest expense, debt	$ 900,000		900,000
Payments of Debt Issuance Costs	1,400,000		1,400,000
Credit Facility \| Revolving Credit Facility
Debt Instrument [Line Items]
Credit facility, maximum borrowing capacity	700,000,000		700,000,000
Capitalized fees	2,600,000		2,600,000
Accumulated amortization of noncurrent deferred finance costs	1,100,000	$ 700,000	1,100,000	700,000		$ 800,000
Amortization of financing costs	(100,000)	(100,000)	(300,000)	(300,000)
Letters of credit outstanding	$ 15,700,000	$ 14,800,000	$ 15,700,000	$ 14,800,000		15,300,000
Weighted average interest rate	2.45%	1.68%	2.45%	1.68%
Credit Facility \| Term Loan
Debt Instrument [Line Items]
Face amount	$ 357,500,000.0		$ 357,500,000.0
Capitalized fees	6,200,000		6,200,000
Accumulated amortization of noncurrent deferred finance costs	3,300,000	$ 2,500,000	3,300,000	$ 2,500,000		2,700,000
Amortization of financing costs	$ 200,000	$ (200,000)	$ (600,000)	$ (700,000)
Weighted average interest rate	2.34%	1.74%	2.34%	1.74%
Securitization Facility
Debt Instrument [Line Items]
Capitalized fees	$ 3,400,000		$ 3,400,000
Accumulated amortization of noncurrent deferred finance costs	3,400,000	$ 3,000,000	3,400,000	$ 3,000,000		3,100,000
Amortization of financing costs	$ (200,000)	$ (100,000)	$ (200,000)	$ (100,000)
Weighted average interest rate	2.50%	1.98%	2.50%	1.98%
Debt instrument, maturity period			2 years
Repayments of secured debt	$ 600,000,000
Interest expense, debt	300,000	$ 600,000	$ 300,000	$ 600,000
Signet UK Finance plc \| Senior Unsecured Notes Due in 2024
Debt Instrument [Line Items]
Face amount	400,000,000		400,000,000
Capitalized fees	7,000,000		7,000,000
Accumulated amortization of noncurrent deferred finance costs	2,400,000	1,700,000	2,400,000	1,700,000		$ 1,900,000
Amortization of financing costs	$ 200,000	$ (200,000)	$ (500,000)	$ (500,000)
Stated interest rate	4.70%		4.70%
R2Net Inc. \| Bridge Loan
Debt Instrument [Line Items]
Long-term debt					$ 350,000,000